Behavioral Corporate Finance**The authors are grateful to Heitor Almeida, Nick Barberis, Zahi Ben-David, Espen Eckbo, Xavier Gabaix, Dirk Hackbarth, Dirk Jenter, Augustin Landier, Alexander Ljungqvist, Ulrike Malmendier, Jay Ritter, David Robinson, Hersh Shefrin, Andrei Shleifer, Meir Statman, Theo Vermaelen, Ivo Welch, and Jeffrey Zweibel for helpful comments. Baker and Ruback gratefully acknowledge financial support from the Division of Research of the Harvard Business School.